The Experts below are selected from a list of 258 Experts worldwide ranked by ideXlab platform
Sung-yen Lin - One of the best experts on this subject based on the ideXlab platform.
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The response of a Thermoluminescent Dosimeter to low energy protons in the range 30-100 keV.
Applied Radiation and Isotopes, 2001Co-Authors: Tieh-chi Chu, Sung-yen Lin, Chu-chung Hsu, Jao-perng LinAbstract:Abstract This study demonstrates the thermoluminescence (TL) response of CaF 2 : Tm (commercial name TLD-300) to 30–100 keV protons which were generated by means of a Cockcroft–Walton accelerator. The phenomenon in which the total Thermoluminescent output from CaF 2 : Tm (TLD-300) decreases with proton energy from 30 to 100 keV (with increase of LET) can be interpreted by the track structure theory (TST). The analysis of the glow peaks: P2 (131°C), P3 (153.5°C) and P6 (259°C), of TLD-300 show the oscillatory decreasing phenomenon as a function of incident proton energy, which can be interpreted with the TST and the oscillatory emission of electrons in a Thermoluminescent Dosimeter (TLD) that is caused by resonant or quasi-resonant charge transfer in ion–atom interactions in this TLD-300.
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The response of the Thermoluminescent Dosimeter CaF2:Tm to protons in the energy range 15–30 MeV
Applied Radiation and Isotopes, 1998Co-Authors: Pin-chieh Hsu, Pao-shan Weng, Sung-yen LinAbstract:Abstract This study describes the response of the Thermoluminescent Dosimeter CaF2:Tm to protons from a compact cyclotron with energies between 15 and 30 MeV. Glow curve analysis indicates that the response of CaF2:Tm to protons depends on proton energy and proton current.
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the response of the Thermoluminescent Dosimeter caf2 tm to protons in the energy range 15 30 mev
Applied Radiation and Isotopes, 1998Co-Authors: Pin-chieh Hsu, Pao-shan Weng, Sung-yen LinAbstract:Abstract This study describes the response of the Thermoluminescent Dosimeter CaF2:Tm to protons from a compact cyclotron with energies between 15 and 30 MeV. Glow curve analysis indicates that the response of CaF2:Tm to protons depends on proton energy and proton current.
Pin-chieh Hsu - One of the best experts on this subject based on the ideXlab platform.
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the response of the Thermoluminescent Dosimeter caf2 tm to protons in the energy range 15 30 mev
Applied Radiation and Isotopes, 1998Co-Authors: Pin-chieh Hsu, Pao-shan Weng, Sung-yen LinAbstract:Abstract This study describes the response of the Thermoluminescent Dosimeter CaF2:Tm to protons from a compact cyclotron with energies between 15 and 30 MeV. Glow curve analysis indicates that the response of CaF2:Tm to protons depends on proton energy and proton current.
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The response of the Thermoluminescent Dosimeter CaF2:Tm to protons in the energy range 15–30 MeV
Applied Radiation and Isotopes, 1998Co-Authors: Pin-chieh Hsu, Pao-shan Weng, Sung-yen LinAbstract:Abstract This study describes the response of the Thermoluminescent Dosimeter CaF2:Tm to protons from a compact cyclotron with energies between 15 and 30 MeV. Glow curve analysis indicates that the response of CaF2:Tm to protons depends on proton energy and proton current.
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The response of the Thermoluminescent Dosimeter CaF2: Tm to protons
Applied Radiation and Isotopes, 1995Co-Authors: Pao-shan Weng, Pin-chieh Hsu, Yu-hsien ChenAbstract:Abstract This study describes the response of the Thermoluminescent Dosimeter CaF 2 :Tm to protons from a Van de Graaff accelerator, with energies between 0.7 and 3.0 MeV and doses between 5 and 350 Gy ( 137 Cs γ-equivalent). Glow curve analysis indicates that the response is similar to that for α-particles, and depends on proton energy, dose and storage time.
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Response of Thermoluminescent Dosimeter CaF2:Dy to ionizing and non-ionizing radiations
International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes, 1992Co-Authors: Pao-shan Weng, Pin-chieh Hsu, Kun-che HsuAbstract:Abstract Thermoluminescent Dosimeter CaF 2 :Dy or TLD-200 was studied for its response to both gamma-ray ionizing radiation and u.v. non-ionizing radiation. Emphasis was placed on high temperature treatment. For gamma-ray irradiation, heat treatment is limited to 400°C; beyond that the sensitivity of CaF 2 :Dy decreases. However, for u.v. irradiation, high-temperature treatment at 900°C is required for CaF 2 :Dy to become an intrinsic Dosimeter. Major studies involve TL output, changes in peak height of glow curves, optical density changes after high temperature treatment, and reproducibility.
L Dewerd - One of the best experts on this subject based on the ideXlab platform.
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su gg t 307 characterization of Thermoluminescent Dosimeter reader precision and artifacts
Medical Physics, 2008Co-Authors: L Bartol, L DewerdAbstract:Purpose: To explore the response of different Thermoluminescent (TL) readers to micro‐cube and chip LiF:Mg,Ti (TLD‐100) TL Dosimeters. Method and Materials: The precision of Harshaw Company TL reader models 3500 and 5500 was evaluated for LiF:Mg,Ti micro‐cube and chip Dosimeters. Sets of TLD‐100 1mm × 1mm × 1mm micro‐cubes and 3mm × 3mm × 1mm chips were mounted in PMMA holders and irradiated to a dose equivalent to 1.00 Gy to water using 60 Co . After irradiation, TLDs were evaluated on one of the readers. The annealing procedure between irradiations consisted of one hour at 400 °C, quick cooling to room temperature, and 24 hours at 80 °C. The ratio of the output of each TL Dosimeter to the median output was tracked for three irradiations for each reader. In addition, the response of the model 5500 reader PMT to various amounts of TL output was analyzed. Sets of micro‐cubes and chips were irradiated to doses ranging from 0.10 Gy to 10.00 Gy dose to water. The light output from the PMT was analyzed for linearity with dose. Results: The mean reproducibility (1 standard deviation) of TLD‐100 micro‐cubes was 2.27% when evaluated with the model 3500 reader and 1.00% for the model 5500 reader. The mean reproducibility (1 standard deviation) of TLD‐100 chips was 1.68% for the model 3500 and 0.55% for the model 5500. In addition, the PMT of the model 5500 reader was found to have an exponential response with dose. Conclusion: The reader used to evaluate TL Dosimeters affects measurements. This work concludes that the model 5500 reader is more precise for evaluation of TLD‐100 micro‐cubes and chips than is the model 3500 reader. In addition, the overresponse of the PMT to TL must be accounted for when using the model 5500 reader.
Pao-shan Weng - One of the best experts on this subject based on the ideXlab platform.
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the response of the Thermoluminescent Dosimeter caf2 tm to protons in the energy range 15 30 mev
Applied Radiation and Isotopes, 1998Co-Authors: Pin-chieh Hsu, Pao-shan Weng, Sung-yen LinAbstract:Abstract This study describes the response of the Thermoluminescent Dosimeter CaF2:Tm to protons from a compact cyclotron with energies between 15 and 30 MeV. Glow curve analysis indicates that the response of CaF2:Tm to protons depends on proton energy and proton current.
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The response of the Thermoluminescent Dosimeter CaF2:Tm to protons in the energy range 15–30 MeV
Applied Radiation and Isotopes, 1998Co-Authors: Pin-chieh Hsu, Pao-shan Weng, Sung-yen LinAbstract:Abstract This study describes the response of the Thermoluminescent Dosimeter CaF2:Tm to protons from a compact cyclotron with energies between 15 and 30 MeV. Glow curve analysis indicates that the response of CaF2:Tm to protons depends on proton energy and proton current.
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The response of the Thermoluminescent Dosimeter CaF2: Tm to protons
Applied Radiation and Isotopes, 1995Co-Authors: Pao-shan Weng, Pin-chieh Hsu, Yu-hsien ChenAbstract:Abstract This study describes the response of the Thermoluminescent Dosimeter CaF 2 :Tm to protons from a Van de Graaff accelerator, with energies between 0.7 and 3.0 MeV and doses between 5 and 350 Gy ( 137 Cs γ-equivalent). Glow curve analysis indicates that the response is similar to that for α-particles, and depends on proton energy, dose and storage time.
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Response of Thermoluminescent Dosimeter CaF2:Dy to ionizing and non-ionizing radiations
International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes, 1992Co-Authors: Pao-shan Weng, Pin-chieh Hsu, Kun-che HsuAbstract:Abstract Thermoluminescent Dosimeter CaF 2 :Dy or TLD-200 was studied for its response to both gamma-ray ionizing radiation and u.v. non-ionizing radiation. Emphasis was placed on high temperature treatment. For gamma-ray irradiation, heat treatment is limited to 400°C; beyond that the sensitivity of CaF 2 :Dy decreases. However, for u.v. irradiation, high-temperature treatment at 900°C is required for CaF 2 :Dy to become an intrinsic Dosimeter. Major studies involve TL output, changes in peak height of glow curves, optical density changes after high temperature treatment, and reproducibility.
L Bartol - One of the best experts on this subject based on the ideXlab platform.
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su gg t 307 characterization of Thermoluminescent Dosimeter reader precision and artifacts
Medical Physics, 2008Co-Authors: L Bartol, L DewerdAbstract:Purpose: To explore the response of different Thermoluminescent (TL) readers to micro‐cube and chip LiF:Mg,Ti (TLD‐100) TL Dosimeters. Method and Materials: The precision of Harshaw Company TL reader models 3500 and 5500 was evaluated for LiF:Mg,Ti micro‐cube and chip Dosimeters. Sets of TLD‐100 1mm × 1mm × 1mm micro‐cubes and 3mm × 3mm × 1mm chips were mounted in PMMA holders and irradiated to a dose equivalent to 1.00 Gy to water using 60 Co . After irradiation, TLDs were evaluated on one of the readers. The annealing procedure between irradiations consisted of one hour at 400 °C, quick cooling to room temperature, and 24 hours at 80 °C. The ratio of the output of each TL Dosimeter to the median output was tracked for three irradiations for each reader. In addition, the response of the model 5500 reader PMT to various amounts of TL output was analyzed. Sets of micro‐cubes and chips were irradiated to doses ranging from 0.10 Gy to 10.00 Gy dose to water. The light output from the PMT was analyzed for linearity with dose. Results: The mean reproducibility (1 standard deviation) of TLD‐100 micro‐cubes was 2.27% when evaluated with the model 3500 reader and 1.00% for the model 5500 reader. The mean reproducibility (1 standard deviation) of TLD‐100 chips was 1.68% for the model 3500 and 0.55% for the model 5500. In addition, the PMT of the model 5500 reader was found to have an exponential response with dose. Conclusion: The reader used to evaluate TL Dosimeters affects measurements. This work concludes that the model 5500 reader is more precise for evaluation of TLD‐100 micro‐cubes and chips than is the model 3500 reader. In addition, the overresponse of the PMT to TL must be accounted for when using the model 5500 reader.
